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P. T. 4IELTING.

Smut Mill.

Patented Aug. 6, 1867.

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PETER T. ELTI NG, OF BUFFAL, NEW YORK;

Letters Patent No. 67,423, dated August 6, 1867.

IMPROVEMENT IN SMUT MACHINES.

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TO ALL WI-IOM IT MAY CONCERN:

lBe it known that I, PETER T. ELTING, of the city of Buffalo, in the county of Erie, and State of New York, do hereby declare that the following is a full and have invented a newand improved Grain-Scourer; and I making a part of this specification,

exact description thereof, reference being hadlto the accompanying drawings, in which-- Figure I is a vertical section of my improved gran-scourer, and

Figure II is a horizontal section of the same, taken on line a b, Fig. I.

vThe nature of this invention consists, first, in the combination and arrangement of a 4revolving stone or iron head, with a stationary brush, having a central feed-opening, through which the grain is admitted, with a discharge over the periphery of the head; second, in the application and use of a concave or dishing screen, and a corresponding convex, brush in combination therewith; third, in the formation of air-passages through the outer shell in such manner that the external air may be drawn in by the action of the fan, and pass through the descending sheet of grain; fourth, in forming in the annular leg a double odset, by whih the centrifugal velocity of the grain, when discharged from the screen, is checked or destroyed before it meets, in its fall, the ascending air-current produced by the fan.

Letters of like name and kind refer to like. parte; in each of te figures.

A A represents the main frame of my improved grain-scourer, upon which all the operating parts are supported. It is formed of the upright timbers A and connecting cross-braces A.

D represents a vertical shaft, located in the centre of the frame, and which is supported in bearings formed in the foot-step cross-brace bl, and cross-brace b2, near the top of the frame.

C represents a circular stone, dressed similar to a mllstone, which is keyed to the top of the shaft B and revolves with the same. A cast-iron head may, in some cases, be substituted.

D represents a circular brush, which is fastened to an adjustable horizontal frame, Dl. The frame Dl rests upon the top of a circular case orshell, D2, which is slightly larger in diameter than the head C. Both the frame Dl and case or shell D2 may be raised or lowered, and adjusted in any required position, thereby raising or lowering the4 brush from the stone, and regulating the action ofv the brush upon the grain passing over the stone, as hereinafter described. This adjustability of both the frame Dl and shell D2 is produced by moans of the vertical' stationary screws e and the upper and lower screw-nuts and hand-wheels el e?, bearing upoutlie earsf, projecting from the frame Dl and shell D2. Any other similar device may be used for the purpose.

G represents a hopper, fastened to the main frame below 4the stone C in such manner that the grain falling over the periphery of the stone will be caught and directed around the shaft inthe centre.

II represents a skeleton metal wheel, which is keyed to the shaft B and revolves with it. Upon this wheel (or connected with it as 'a part thereof) is a wooden frame, H', made in sections, and fitting on to the arms of the wheel, for receiving and supporting the Wire cloth, gauze, or screen h2. The wooden frame is made dishiug or concave, in order to give a dishing or concave form to the screen. It is important to give the screen h2 this` dishing or concave form, in order that the centrifugal force may give the grain a more perfect rubbing action upon the face of the screen.

The brush I is made convex upon its face, to correspond with the coucavity or dishing form of the screen, so that the brush will retard the rotary motion of the-grain, and4 the screen and the brush act together in a. more perfect manner, (in this form,) with the centrifugal force, in scouring the grain as it. passes over the screen.

J, represents a case or shell around the screen.

The brush 'and shell are'made adjustable, by means of the vertical screws jl, screw-nuts f2, and ears ja, in the manner above described.

K represents an annular leg, formed by means-of the inner cylinder cl and the outer cylindrical shell k2. Ilwo offsets are made in thc annular leg, for the 'purpose of diminishing or destroying the'veloeity of the falling grain. One .offset is formed upon thevinner cylinder kl, as shown at Z, and the other upon the outer shell k2, as shown at ll, Fig. I. Vlhe bottom of the annular legis made hoppered, as shown at m,'eacl1 hopper terminating in a grain-discharge spout, m.

N represents a fan, which is keyed on to the shaft B, and revolves with the same. The fameuse N is located within the'inner cylinder of the annular'leg, and has two discharge nnzzles,ln2, at opposite sides thereof.

The e'ye of the fan admits air from the lop through a conical flue, n3, which forms a part of and is connected to the inner cylinder kl of the annular leg, and the sides of which are extended upwardly in the direction of the periphery of the screen II, so that an air-current may be produced from and through all parts of the screen to the fan.

O represents a circular opening made in the outer cylindricalA shell, and O another opening, formed in the inner cylinder of the annular leg, connecting the conical Hue n3 with the external air. Both these openings are situated below the offsets Hl, so that an air-current may be produced which will pass through the annular sheet of grain, (the velocity of movement of which has been diminished by said oi`sets,) in order to carry off and separate the dirt and foreign mattei' more elfectually from the grain than could be done by the first-described air-current through the screenH.

P represents `the driving-pulley, which .is keyed to the shaft and gives motion to the same. K

The operation of this machine is substantially Ias follows: Grain is fed into the top of themachine, through the central opening E in the frame D', and discharged on to the stone C. As the stone revolves,.the grain is carried, by centrifugal force, gradually from the centre to the periphery of said stone, and during such movenientlis kept in Contact with the brush D, which scours andbrcaks or rubs the dirt or foreign matter off the kernels of grain, rendering it clean and bright. After the dirt has in that manner been scoured olf the grain, it becomes necessary to separate the same from the grain, and for this purpose the grain is again collected in the centre and around the shaft B, and fed on to the screen H. The revolution of this scr/een will cause the grain to move radially fromY the centre to the periphery, and, by Contact with the brush I, to be continually turned over, so as to present all parts and kernels of the grain to the action of the air-currents downwardly through the said screen. This current separates and carries off the greater portion of the dirt and foreign matter which are mixed with the grain. After the grain is discharged over the edge of the screen, it drops, in an annular sheet, down through the annular leg K. By means of the offsets Z Z1, the velocity of the descending grain is sufficiently checked or diminished to cause it to pass the openings O O in an even, and steady current. External air is sucked in at the openings and through this sheet of grain by the action ofthe fan, and separates and carries oli' the remaining dirt, dust, or other foreign matter over thevedge of the inner cylinder kr', through the inverted conical flue n, into the fan-ease, and out of the nozzles n?, while the grain is permitted te drop to the bottom of theleg` and is discharged through the spouts m in a perfectly clean condition.

In the accompanying drawings the Ymovement of the grain is represented by red arrows, and theaircurrents are shown by black arrows. I

I am aware that .in some grain-scouring machines heretofore constructed a revolvingbrush has been used,

in combination with a stationary perforated head, and I therefore disclaim such combination. Iam, also aware that in some machines openings have been in the outer shell in such manner as to expose the descending volume of grain (in some part of its passage) to the external air, and I therefore concede that such openingsare oh bixt'I am not aware that such openings havelbeen so arranged, in reference to other parts ofthe machine, as to cause a current of air to pass through the descending volume of grain from without, in the manner herein described. i

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The combination and arrangement of the revolving stone or iron head C, with the stationary brush D, substantially as described.

2. The concave screen h2 and brush l, arranged and operating substantially as described.

The air-passage O und O, so arranged, with reference to the conical llue 71.3 and the fan, that a current of external air will be drawn in by the action of the fan, and pass through the descending sheet of grain, for the purpose and substantially as described il. The double offset Z Z, .in the annular leg, for the purpose and substantially asherein described.

PETER T. ELTING.

lllitnesscs:

B. FonBUsn, B. H. MUEHLE. 

